/Engine/Plugins/FX/Niagara/Source/Niagara/Classes/NiagaraEmitter.h
Gets a pointer to an event handler by script usage id. This method is potentially unsafe because modifications to the event handler array can make this pointer become invalid without warning.
[FNiagaraEventScriptProperties](API\Plugins\Niagara\FNiagaraEventScriptProperties) * GetEventHandlerByIdUnsafe ( [FGuid](API\Runtime\Core\Misc\FGuid) ScriptUsageId )